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use std::collections::HashSet;
use fuzzy_matcher::clangd::fuzzy_match;
use crate::config::repository::ChannelType;
use crate::config::repository::RemotePackage;
use crate::config::repository::RepositoryXml;
use super::installed_list::InstalledList;
use super::ToId;
#[derive(Debug, PartialEq, Eq, Hash)]
pub enum SdkFilters {
/// Filter by display name
Name(String),
/// Filter by version
Version(String),
/// Select only packages that matches this obsolete state
Obsolete(bool),
/// Filter by installed packages
Installed,
}
pub struct FilteredPackages<'installer, 'repo> {
/// The original repo to filter from
pub repo: &'repo RepositoryXml,
pub packages: Vec<&'repo RemotePackage>,
/// List of filters to apply
pub filters: Vec<SdkFilters>,
/// These are singleton filters applied to all entries
pub single_filters: HashSet<SdkFilters>,
pub installed: &'installer InstalledList,
/// The channel to show packages for. If set to None all channels are shown
pub channel: Option<ChannelType>,
}
impl<'installer, 'repo> FilteredPackages<'installer, 'repo> {
pub fn new(repo: &'repo RepositoryXml, installed: &'installer InstalledList) -> Self {
Self {
repo,
installed,
packages: Vec::new(),
filters: Vec::new(),
single_filters: HashSet::new(),
channel: None,
}
}
/// Adds filter to the list of availabke filters
pub fn push_filter(&mut self, filter: SdkFilters) {
self.filters.push(filter);
}
// /// Enables a particular filter. Returns true if operation was successful
// pub fn enable_filter(&mut self, index: usize) -> bool {
// if let Some(filter) = self.filters.get_mut(index) {
// filter.0 = true;
// return true;
// }
// false
// }
// /// Disables a particular filter. Returns true if operation was successful
// pub fn disable_filter(&mut self, index: usize) -> bool {
// if let Some(filter) = self.filters.get_mut(index) {
// filter.0 = false;
// return true;
// }
// false
// }
/// Adds a singleton filter. Singleton filters are "AND"ed together
pub fn insert_singleton_filter(&mut self, filter: SdkFilters) {
self.single_filters.insert(filter);
}
/// Removes a singleton filter
pub fn remove_singleton_filter(&mut self, filter: &SdkFilters) -> bool {
self.single_filters.remove(filter)
}
/// removes and reteurns the last filter
pub fn pop_filter(&mut self) -> Option<SdkFilters> {
self.filters.pop()
}
pub fn set_channel(&mut self, channel: Option<ChannelType>) {
self.channel = channel;
}
pub fn get_channel(&self) -> &Option<ChannelType> {
&self.channel
}
/// Returns true if there are filters available
pub fn has_filters(&self) -> bool {
!self.filters.is_empty()
}
/// Applies the filters and saves the filtered packages for future
/// references
/// returns the number of entries collected
pub fn apply(&mut self) -> usize {
if self.filters.is_empty() && self.single_filters.is_empty() {
// return the count to the original array
self.repo.get_remote_packages().len()
} else {
let installed_hash = self.installed.get_hash_map();
let mut ranked: Vec<(i64, &'repo RemotePackage)> = self
.repo
.get_remote_packages()
.iter()
.filter(|p| {
for filter in self.single_filters.iter() {
match filter {
SdkFilters::Installed => {
// short circuit for installed
if !installed_hash.contains_key(&p.to_id()) {
return false;
}
}
SdkFilters::Obsolete(obsolete) => {
// short circuit for obsolete
if p.is_obsolete() != *obsolete {
return false;
}
}
_ => {}
}
}
// apply channel filters
if let Some(channel) = &self.channel {
if channel != p.get_channel() {
return false;
}
}
true
})
.filter_map(|p| {
if self.filters.is_empty() {
return Some((1, p));
}
for filter in &self.filters {
match filter {
SdkFilters::Name(name) => {
if let Some(rank) = fuzzy_match(p.get_display_name(), name) {
return Some((rank, p));
}
if let Some(rank) = fuzzy_match(p.get_path(), name) {
return Some((rank, p));
}
}
SdkFilters::Version(version) => {
if let Some(rank) =
fuzzy_match(&p.get_revision().to_string(), version)
{
return Some((rank, p));
}
}
// obsolete and installed should undergo another filter
_ => {}
}
}
None
})
.collect();
ranked.sort_unstable_by_key(|p| p.0);
self.packages = ranked.iter().rev().map(|m| m.1).collect();
self.packages.len()
}
}
/// returns the internal package filtered list.
/// Note that it does not apply filters set so you must call `apply` before calling this
pub fn get_packages(&self) -> &Vec<&RemotePackage> {
&self.packages
}
/// reeturns the original unfiltered packages vec
pub fn get_unfiltered_packages(&self) -> &Vec<RemotePackage> {
self.repo.get_remote_packages()
}
}